Question about Hitachi 42EDT41 42 in. HD-Ready Plasma Television

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Hitachi 42EDT41 with/ green pixels randomly flickering on screen


You mentioned that the y sus board voltages need adjustment to correct this problem. Have you done this procedure on this model? Is there anything
else that you are aware that could cause this problem? It looks like I may
have a bad capacitor (C84) on the y sus board. I ordered the service manual
today. Thanks for any help you can provide.

Mike D.

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  • reniep Jun 03, 2008

    I also have the same problem -- it seems to get worse and then better with no apparent problem. Sometimes it's not there at all. The flashing green spots generally are more visble on the lower 1/3 of the screen. This has been going on for about 6 months now. I would say overall it's gotten just slightly worse over time. Any advise would be greatly appreciated. Otherwise I guess I am shelling out $$$ to have someone come out and look at it. Tried contacting Hitachi directly but they won't even hazard a guess as to the problem...

  • cdan56 Sep 26, 2008

    i also have green "snow" on the tv, it seems to get better when the tv runs a while. can this be fixed with messing around with the settings???

  • gary547 Dec 14, 2008

    Green pixels randomly flickering on screen, this starts when the tv is first switched on and covers the whole screen, when say after an hour the problem is not as bad but still spoils the enjoyment of watching the tv.

    is there a solution to fix this, or do i need and engineer.

    the tv is a 42inch techwood plasma.

    Any help would be great, thanks....



1 Answer

Dave you are ****** you never help

Posted on Aug 20, 2008


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1 Answer

I have Hitachi 55hds69 plasma tv that is getting green and red sparkles on the screen. is there adjustment that can be make to correct this?

There should be a label on the inside of the cabinet saying what the voltages to the VS and VA should be along with any other voltages that are adjustable, have you set the various voltages to the correct specs

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1 Answer

Green/ red pixels on screen. tv making annoying

If the unit has not previously had the PSU or Y-SUS boards replaced prior to this issue. Then it sounds like the voltages are off on one of those two boards. There is a process for checking those voltages and trying to adjust them. If those boards were recently replaced I would say the tech did not check voltage accuracy. But if it just happened out of no where go with the Y-SUS board as the problem. I say that because the unit powers on.

Feb 20, 2010 | Toshiba 42DPC85 42 in. EDTV-Ready Plasma...

1 Answer

The screen on my Hitachi 42EDT41 went blank. I still have sound, but no image. POssible problems/solutions? Thank you!

This is a common plasma tv problem. I changed the Y-sustain board and the Z-sustain board and that fixed my "sound, but no picture" problem. You can find both boards on ebay; the Y-sus board is around $100 and the Z-sus is around $50. Hope this helps.

Dec 08, 2009 | Hitachi 42EDT41 42 in. HD-Ready Plasma...

2 Answers

I have a Hitachi tv and tonight the screen went blank but the voice remained on. does anyone know how I can fix it????

Usually it is the Y-sus that has the problem. This is one of the boards that sustain the picture on the screen.

For this particular issue, there could also be issues with the y-drives and Z-sus. The way to find out for sure is to take the voltages (Va, Vs, Vcc, etc) on the boards and matching them up with the specified values on the panel.

Oct 13, 2009 | Hitachi 42EDT41 42 in. HD-Ready Plasma...

2 Answers

Hitachi Plasma EDTV has green dots flickering all over screen

that is called diffusion. that can be adjusted out in most cases by adjusting the y sustain pcb but can also be the main pcb, the logic pcb and panel itself but not likely.

Jan 11, 2009 | Hitachi 55HDS69 55 in. Plasma Television

1 Answer

When I turn my hitachi plasma tel on I see lots of green dots all over the screen is this an adjustment problem or a part going out

I had the same problem with my Hitachi 42edt41. It was the Y sustain pcb. Large board on the left as you are looking at it from the back. Costs about $750. for the part.

Dec 14, 2008 | Hitachi 42EDT41 42 in. HD-Ready Plasma...

1 Answer

From max tv

ok is the monitor u need to replace the lower board of the tv and thats it and u are done enjoy

Dec 06, 2007 | Hitachi 42EDT41 42 in. HD-Ready Plasma...

2 Answers

Hitachi 42edt41green static

i had this problem to,
what i did to fix mine, take the back off and find the ysus board there are pots on the y sus board that you can adjust with a screw driver mine has 4 on it i adjusted the the two more accessible ones and the problem is gone

Nov 27, 2007 | Hitachi 42EDT41 42 in. HD-Ready Plasma...

1 Answer

Hitachi 42EDT41

There may be a software glitch. Call Hitachi customer service and ask if your model needs a firmware update to get rid of the sparkles.They also have a website

Aug 24, 2007 | Hitachi 42EDT41 42 in. HD-Ready Plasma...

1 Answer

Missing voltage?

alot of voltage adjustments at that high voltage are likely from another source that develops it like the the swith-mode power supply upstream on power supply board that feeds it ..look for burnt resistors in this case.. I bet your in the wrong circuit but u can test all wires and pins coming in for 200 volts. get a schamatic of it and find a good tech if u dont know what i am saying. ty crazylarry

Jun 27, 2007 | Hitachi 42EDT41 42 in. HD-Ready Plasma...

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